This is the story of a little penguin named Mumble who has a terrible singing voice and later discovers he has no Heartsong. However, Mumble has an astute talent for something that none of the penguins had ever seen before: tap dancing. Though Mumble’s mom, Norma Jean, thinks this little habit is cute, his dad, Memphis, says it “just ain’t penguin.” Besides, they both know that, without a Heartsong, Mumble may never find true love. As fate would have it, his one friend, Gloria, happens to be the best singer around. Mumble and Gloria have a connection from the moment they hatch, but she struggles with his strange “hippity- hoppity” ways. Mumble is just too different–especially for Noah the Elder, the stern leader of Emperor Land, who ultimately casts him out of the community. Away from home for the first time, Mumble meets a posse of decidedly un-Emperor-like penguins–the Adelie Amigos.